Rotary valve for explosive-engines.



B. F. BARKEH.

ROTARY VALVE FOR EXPLOSIVE ENGiNES.

APPLICATION FILED sEPT.|,1915.

1,251,953. Patented Jan. 1,1918.

3 SHBETS--SHBBT l.

I?. F, BAHKEHf www VALVE FUR ExPLoswE'ENGlNEs.

APPLICATION FILED SEPZJJ; 1915 l f n 1 E 1,353,515,953 n Infomed Jan. 1,1918.

s SHBETS-SHEET z.'v Yu II. I". BARKEH.

ROIAHY VALVE FOR EXPLUSIVE .ENGINES. Y

APPLICATION FILED SEPT- I, 1915.

1,251,953; I I I .1mmnmd'Jan- 1,1918.

3 SHEETS-SHEET 3.

:RUBEN r. BAKKER,

- UNITED sTATEs PATENT OFFICE.

OI' PORTLAND, OREGON.

'ROTARY VALVE FOR EXPLOSIVE-ENGINES.

Application 1ed September 17, 1915.

To all whom t may concern:

Be it known that I, RUBEN I?. Brianna, a `citizen of the United States, and resident of Portland, county of Multnomah, State of Oregon,^"have invented a new and useful Improvement in Rotary Valves for Explosive-Engines, Vof which the following is a specification.

valve body will ber preventedv from undue expanson due to heat,

maintained at and `which Will be all times in fluid-tight contact with the walls of the valve chamber.

Another of the main objects of my invention is to provide a rotary valve which will be made with a plurality of inlet and eX- haust ports for4 each cylinder, and which may therefore be driven at a comparatively low speed.

Still another of the objects of my invention is to provide a valve in which the inlet conduit will be encompassed by the exhaust and the. heated gases passing through the latter will heat and gasify the incoming vapors in the inlet'conduit.

. Still another of the main objects of' my -invention is to provide means for preventing leakage of4 gases from one cylinder to another, or around the valve body.

Features of my invention which are important include the means by which a con stant-circulation through the water-jacket of the valve body is maintained; the means by which the. inlet and.) enhaustconduits are maintained" in constant communication with the inlet and `exhaust manifolds; ,and the construction of the parts which makes-rt a conliparatively sim-Vj `ple Structure, low in cost Iof Amanufacture andv maintenance, and capable of great flexibility in the `manner of assembling and driving. y

All of the Adetails of my inventionv are f1" shown .in the accompanying drawings, in .-hch, v

Speeication of Letters Patent.

shaft, o5 the valve and itsassociatedv I means of which Patented Jan. 1, 1918.

serial No. 51,499.

Figure 1 is a transverse, vertical sectional view through the valve and corresponding cylinder illustrating particularly the arrangement of the water jackets of my valve and its chamber;

Fig. l is a sectional view showing an alternate detail of construction.

Fig. 2 is a longitudinal, vertical section` four-cycle gas showing the cylinders of a engine with my rotary valve .incorporated therewith Fig. 2 itself.

Figs. 3, 4, 5, and 6, are transverse, vertical sections, in diagranl form showing the positions of the valve during consecutive strokes in the cycle of operation; and Fig. 7 is a detail of construction.

is an elevation of the valve, by

In the accompanying drawings, my 4inven-` tion is shown incorporated in' a fourcycle gas engine type. The engine cylinders are represented by a, and their Water-jacket by a. c2 is the crank case of the engine, fr. is the crank shaft, a* is an arm of such iistons, the piston rods. The upper portion of the engine is formed into a Water-jacketed, cylindrical, valve chamber b, the water-jacket of which is indicated by o', and the rotary valve body c is mounted Within said chamber b. The longitudinal axis of the valve chamber b is located in the common vertical plane of the cylinder axes. In the upper end of each cylinder is a single port d connectingthe cylinder with the valve chamber b, and the orts of the valve are adapted to register wit 'i determined intervals during the rotation of the valve. The cylinder Water-jacket a is also provided with ports b2 and b3, located substantially as shown vin Fig. 2.

The valve body is cylindrical in shape and is adapted to be rotated freely in' the valve chamber.V One end of said valve body' is closed, andis connected to a driving shaft e, by an Oldham coupling e (see Fig. 2).

Said shaft e ismounted 1n a a the spark plug. a"

the cylinder ports d at pre bracket e2 and is provided with a-driving element es by power from the engine shaft n?, is transmitted to thevalvc body. Said drive may be geared down so as to rotate the valve at slow speed. In the illustrations, the valve is adapted for every four comple open cylindrical hub o. Mounted on this tonalszc one revolution y cycles of theengine. The other end ofrlt ie' valve body c is an` the rotation of the valve. is closed at one end hub is i005@ .mina c, said @uur being axial line of the valve body is an inlet conduit 7L extending the entire length of the body and connecting directly with the exterior of the latter by the inletports h. These latter are adapted to be brought into registration with the cylinder ports The inlet conduit and its other end terminates in the open hub c as previously mentioned. f.

Concentric with, and encompassing the inlet conduit is the exhaust conduit e. Said exhaust conduit i is provided With a plurality of exhaust ports i" 'which connect directly with the exterior of the value and are adapted to be brought into registration with the ports d of the cylinder by the rotation of the valve. An exhaust manifold j is affixed to the engine and has a port j" connecting with the valve chamber la. A plu rality of ports j arranged in the sine verti.

cal plane with the port j connect the exhaust conduit with the exterior of the valve body and said ports register successively with the port j during the rotation of the valve, andv form the means for exhausting the burnt gases from the exhaust conduit. Concentric with and encompassing the exhaust conduit i is a water-jacket It. Said Water-jacket la is provided With a plurality of ports 7c and 7c2 arranged in vertical planes at opposite ends of the valve body. During the rotation of the valve body, the ports k and k2 will register Withthe ports b2 and b respectively. In this Way, the circulation through the water-jacket 7c of the valve body is maintained. l

As a means for'preventing leakage from one cylinder to the other, the packing rings m and m are positioned as sliovvnin Fig. 2,

vand oil grooves n running entirely around the valve body'are kept full of oil under constant pressure. The oil under pressure is carried by the conduit n. shown in Fig. 1, the .source of pressure beingvll omitted. As a means-for insuring the expansion of the acking rings m', which are located adiacent the oil grooies a, ducts n.2 aredrilled As a means which connect sai loil grooves with the ring groove. (See Fi 7). In this Way, the oil pressure is exercd so as to expand the rings m.

for preventing leakage around the periphery of the valve body, the packing members r are used.

(See Fig. i.) These=- menons and any Wear is compensated :tor by theI spring expansion.

An alternate construction shown in Fig. 1a may be substituted for the last mentioned feature and this construction consists in the use of horizontal packing plates s parallel with the cylinder port d and on opposite sides thereof. Said plates s have upper concaved faces which bear on the valve body, and a iiat spring s placed under each plate has a ytendency to thrust said plate up against the valve.

Ports t connect the lower faces of the plates skvvithv the interior of the cylinders, and during the compression and explosion strokespoi the engine, Said plates s will be more strongly thrust up against the valve body so as to maintain a tight joint on either side of thev port d.

I claim:

1 In a gas engine having Water-jacketed cylinders, a cylindrical valve chamber, a port connecting said valve chamber and cy1- inder, a Waterfjacketed rotary valve mounted in said valve chamber, said valve com-v prising concentric inlet and exhaust conduits, a' water-jacket encompassin the latter, and valve ports connecting sai conduits with the exterior of the valve, adapted to be brought into registration with the cylinder port by the rotation of the valve.

2. In a gas engine having water-jacketed cylinders, a Water-jacketed cylindrical valvechamber, a p ort connecting said valve cham ber and cylinder, a, watenjacketed rotary valve mounted in said'valve chamber, said valve comprising concmtric inlet and ex- 415 haust conduits, a water-jacket encompassing the latter, valve ports connecting said conduits with the exterior of the valve, to be brought into registration with the cyle inder port by the rotation of the valve, and means For maintaining the Water-jacket of the valve in constant communication with the waterjacket of the cylinders.

3. I n a gas engine having Water-jacketed cylinders, a water-jacketed cylindrical valve chamber, a port connecting said valve chain- .ber and cylinder, a water-jacketed rotary valve mounted iii said valve chamber, said valve comprising concentric inlet and exhaust conduits, a Water-Jacket encompassing adapted y ythe latte, valve ports connecting said conduits with the exterior of the valve, adapted to be brought into registration with the cylinder port by the rotation of the valve, and registering ports for maintaining the waterjacket of the valve in constant communication with the water-jacket of the cylinders.

4. In a gas engine having Water-jacketed cylinders, valve mechanism. comprising a Water-jacketed cylindrical valve chamber a ort connecting said vvalve chamber and cylmder, a water-1 acketed rotary valve mounted in said valvechamber, said valve comprising concentric inlet and Aexhaust conduits, a water-jacket encompassing the lat-y valve ports connecting said conduits ter with the exterior of the valve, adapted to be brouht into registration with'the cylinderl port y the rotation of the valve, an exhaust manifold, means for maintainmg the ex-` haust conduit of the valve in constant com-- municationwithl the exhaust manifold, an inlet manifold, means formaintaiing the inlet conduit in constant communication with the inlet manifold, and means for maintaining the water-jacket of the valve in constant communication with the Waterjacket of the cylinders. n f5. In a gas-engine having water-jacketed cylinders, valve' mec ansm com rising a water-Jacketed cylindr cal valve c alnber,- a port connecting said .v lvechamber and cylinder, a vvater-jackete l rotary valve mountt ed 1n said valve cham er, said valve comprising concentric inlet and exhaust 'convvduits, a Water-jacket encompassingthe lat- .manifold, registering ports for maintain-` ing the exhaust conduit of the valve in con.- stant communication with the exhaust ,manifold, an inlet manifold, and means for maintaining the inlet conduit in constant com` munication with the inlet manifold, andrcgistcring :ports for maintaining/the water jacket of the valve in constant communication Witlrthe Water-jacket of fthe cylinders.`

6. Ag' valve-,for internal combustion enf gines consisting of a rotar valve Atubchav-` ing a central 4longitudinel gas intake passage, an intermediateexhaustgpassage surrounding said intake' assafge andm contiguous, longitudinal coo ing medium Passage surrounding said'exhaust passa-ge.` L

RUBEN RBARKR. 

